Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest Income
Interest and fees on loans	$ 14,484	$ 13,437	$ 42,086	$ 37,390
Interest on investment securities available for sale	844	696	2,488	2,176
Interest on investment securities held to maturity	13	24	61	69
Interest on deposits in other banks	47	55	82	145
Total Interest Income	15,388	14,212	44,717	39,780
Interest Expense
Interest expense on deposits, borrowings and junior subordinated debentures	706	487	2,208	1,411
Net Interest Income	14,682	13,725	42,509	38,369
Provision for loan losses	676	0	1,378	(1,136)
Net Interest Income After Provision for Loan Losses	14,006	13,725	41,131	39,505
Other Operating Income
Mortgage banking income	8,113	0	23,235	0
Employee benefit plan income	1,004	899	2,712	2,653
Electronic banking income	721	590	2,043	1,694
Purchased receivable income	587	582	1,738	1,547
Service charges on deposit accounts	559	599	1,617	1,682
Gain on sale of securities, net	4	15	134	461
Gain on sale of premises and equipment	0	1,115	0	1,115
Equity in earnings from RML	0	384	0	608
Other income	1,419	750	3,026	2,014
Total Other Operating Income	12,407	4,934	34,505	11,774
Other Operating Expense
Salaries and other personnel expense	11,440	7,107	33,115	19,866
Occupancy expense	1,522	1,041	4,720	3,030
Change in fair value, RML earn-out liability	780	0	2,869	0
Professional and outside services	642	323	2,184	947
Marketing expense	565	417	1,824	1,425
Insurance expense	406	319	1,075	788
Equipment expense	387	405	1,249	1,062
Software expense	298	383	947	997
Internet banking expense	229	264	676	677
Intangible asset amortization expense	73	81	218	214
Merger and acquisition expense	0	1,031	0	1,736
Reserve for (recovery from) purchased receivables	(23)	241	(95)	447
OREO (income) expense, net rental income and gains on sale	152	(68)	328	(315)
Other operating expense	1,732	1,235	5,308	3,494
Total Other Operating Expense	18,203	12,779	54,418	34,368
Income Before Provision for Income Taxes	8,210	5,880	21,218	16,911
Provision for income taxes	2,678	1,982	7,111	5,848
Net Income	5,532	3,898	14,107	11,063
Less: Net income attributable to the noncontrolling interest	197	191	431	329
Net Income Attributable to Northrim BanCorp, Inc.	$ 5,335	$ 3,707	$ 13,676	$ 10,734
Earnings Per Share, Basic (USD per share)	$ 0.78	$ 0.54	$ 2.00	$ 1.59
Earnings Per Share, Diluted (USD per share)	$ 0.77	$ 0.53	$ 1.97	$ 1.57
Weighted Average Shares Outstanding, Basic (shares)	6,856,059	6,831,976	6,854,862	6,733,175
Weighted Average Shares Outstanding, Diluted (shares)	6,952,209	6,919,993	6,941,861	6,822,288